000 00295nam a2200121Ia 4500
008 220201s1976 xx 000 0 eng d
082 _a621.75
_bDAS
100 _aDass, B.R.
245 0 _aI.T.I. Workshop Science
260 _aNew delhi
_bDhanpat rai & Sons
_c1976
300 _a240
942 _2ddc
999 _c21829
_d21829